<div id="sequential_nav">
	<% if @previous_photo != nil %>
		<%= link_to 'Previous', photo_path(@previous_photo) %>
	<% else %>
		<span class="disabled_link">Previous</span>
	<% end %> | 
	<% if @next_photo != nil %>
		<%= link_to 'Next', photo_path(@next_photo) %>
	<% else %>
		<span class="disabled_link">Next</span>
	<% end %>
</div>
